Check the listing for details. Knog Oi Prima Bell Large Anthracite Bicycle Bell with Wavetek Technology &. Condition: New. Listed at 65.98 USD. **Bundle Title:** Knog Oi Prima Bell Large Premium Alloy Bike Bell with Wavetek Technology, Anthracite, Set of 2 **Product Description:** Upgrade your bicycle with this premium set of Knog Oi Prima Bells, featuring the innovative Wavetek technology for a louder, clearer, and longer-lasting chime. Crafted from durable aluminum and high-strength plastic, these bells combine sleek aesthetic design with exceptional performance. The tapered edges and intricate laser etching enhance the signature wrap-around style, making them a stylish yet functional addition to any handlebar. Designed to fit a wide range of handlebar diametersfrom 23.8mm to 31.8mmthanks to included shims, the large size ensures a secure and snug fit on most handlebars. The hinged clamp installation allows for quick, tool-free.